hillbstad



B. H. HILLESTAD.

ELECTRIC IGNITER COLLAR.

APPLICATION FILED APII. 2. I9I8.

Patented Deo. 2, 1919.

BEN R. HILLESTAD, 0F KNDALL, WISCONSIN.

ELECTRIC-IGNITER COLLAR.

Specification of Letters Patent.

Patented Dec. 2, 1919,

Application filed April 2, 1918. Serial No. 226,249.

T o all fio/wm t may concern:

Be it known that I, BEN R. HiLLnsTAD, a subject of the King of Great Britain residing at Kendall, in Ithe county of Monroe and State of lllisconsin, have invented certain new and useful Improvements in Electric-Igniter Collars; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art t-o which it appertains to make and usethe same.

This invention relates to improvements in collars especially adaptable` for use in connection with igniters of the character described, illustrated and claimed in Patent Number 1,001,702, of August 29th, 1911, and has for one of its objectsthe provision of a device of this character which can be readily adjusted to compensate for the wear of the same and the movable electrode of the igniter and other parts thereof.

Another object of this invention is the provision of a collar constructed in coil formation, whereby the convolutions may be spread to increase the length thereof and thereby compensate for the Wear which has been found great upon the ordinary collars used in connection with electric igniters of the character described in the above named patent.

A further object of this invention is the provision of an electric igniter Collar of the above stated character which shall 'be simple, durable and eficient, and which may be manufactured and sold at a comparatively low cost.

With these and other objects in view, as will become more apparent as the description proceeds, the invention consists in certain novel features of construction, combi-l nation and arrangement of parts as will be hereinafter more fully described and claimed.A

For a complete understandingof my invention, reference is to be had to the following description and accompanying drawing, in which Figure 1 is a vertical sectional view of an electric igniter illustrating my collar applied thereto,

Fig. 2 is a transverse sectional view of the same,

Fig. 3 is a fragmentary vertical sectional view of the collar in the igniter shown in section, and

Fig. 4 is a perspective view of the collar.

The following description relates to an electric igniter described, claimed, and illustrated in Patent Number 1,001,7 02, in which the numeral 1 vindicates a. T-shaped member having mounted therein a stationary electrode 2 provided with a clamping terminalV 3 to receive an electrical conductor through an opening 4.- A cylindrical member 5 is provided with an internally threaded cup- 6` at one end to receive one of the arm portions of the T-shapedmember 1 and has mounted thereinra sleeve 7 in which is slidi.

ably mounted a movable electrode 8. having one of its ends associated with the stationary electrode 2 and normally spaced therefrom. A hollow member 9 is slidably mounted in the other end of the cylindrical member 5 and has its inner end closed by an end wall 10 provided with an opening vto receive the movable electrode 8 which rounds the hollow cylindrical member 9 and bears .at one end against the same and the opposite end bears against the member 5 Vfor normally urging the hollow member outwardly of the member 5 and disengages the movable electrode 8 from the stationary electrode 2. In the ordinary construction of the electric igniter just described, washers are interposed between the head 11 and the end wall 10 of the hollow member 9 upon the movableelectrode 8. I have found in using the igniter above described with the collars that in a short time the collars become worn or mutilated so that the movable electrode 8 has undue movement in relation to the stationary electrode 2 and the button 15 thus causing an imperfect spark between the electrodes when operated or no spark at all and to overcome this disadvantage, I have provided a collar 17 constructed from a single length of material 18 which is bent into coil formation as clearly illustrated in Fig. 4 having the convolutions in close relation to each other. The material from which the collar 17 is constructed contains considerable rigidity so that the coils can be separated or moved apart for the purpose of lengthening the collar when des'ired. The collar is placed between the end Wall l0 and the head 11 upon the electrode 8 and during the Wearing of the various parts the collar 17 can be removed and the convolutions thereof spread slightly apart to compensate for the Wearing of any of the parts, thus securing a correct spark between the electrodes at all times.

While I have shown and described the preferred embodiment of my invention, it will be understood that minor changes in construction, combination and arrangement of parts may be made Without departing from the spirit and scope of the invention, as claimed.

What I claim as new is 1. An electric igniter collar comprising a body constructed from a single length of material bent into a non-resilient coil formation having the convolutions thereof in close relation, said convolutions capable of being sepa-rated to lengthen the body.

2. The combination with an electric igniter including a stationary electrode and a movable electrode having an actuating mea-ns therefor, of a body constructed from a single length of material bent into a non-resilient coil formation positioned on the mov able electrodebetween the same and the actuating means therefor, said coil having its convolutions in close relation and capable of being separated to lengthen the body when the parts yof the same become Worn.

In testimony whereof I aiiix my signature in presence of tWo Witnesses.

l BEN R. HILLESTAD.

Witnesses:

W. W. SMITH, I. A. MUELLER. 

